Argentina, Bolivia, Brazil, Colombia, Ecuador, Paraguay, Peru, Uruguay (B), Venezuela.
Vagrant to Falkland Islands (Malvinas).
Southern Brazil (southern from Mato Grosso and Bahia) to Uruguay, and south-eastern Bolivia (Santa Cruz to Tarija) through Chaco of Paraguay to northern Argentina (La Rioja and Córdoba).
Rufous-thighed Hawk (Accipiter erythronemius) [XC464716]
by Luiz C. Silva from S\u00e3o Francisco do Sul, Santa Catarina, Brazil (song)
Rufous-thighed Hawk (Accipiter erythronemius) [XC522099]
by Bernabe Lopez-Lanus from Forestal Belga (Cruce Caballero), San Pedro, Misiones, Argentina (song)
Often considered subspecies of Sharp-shinned Hawk (Accipiter striatus), with which forms superspecies, along with White-breasted Hawk (Accipiter chionogaster) and Plain-breasted Hawk (Accipiter ventralis). The group has been split on grounds of differences in morphology, ecology and probably also behaviour.